Under normal circumstances urination generally will not discharge sperm, but if before urination men have had ejaculation, it is possible to discharge sperm. Due to the male physiological and anatomical characteristics, the urethral orifice and spermatozoa for the same outlet, and there is a section of the shared channel, if ejaculation immediately after urination, the urine may be the urethra residual sperm flushed to the outside of the body, resulting in urination discharging the illusion of spermatozoa. Physiologically, as the bladder internal sphincter and the seminal vesicle glands cannot open at the same time, i.e., when ejaculation occurs, the bladder internal sphincter contracts, and the bladder internal sphincter closes, preventing urination. The seminal vesicle glands are in a diastolic state during urination to avoid discharge of semen. However, if a small amount of semen remains in the urethra, urination at this time will be able to expel the sperm, but this is a normal phenomenon, not to worry. Pathologically, when the patient has retrograde ejaculation, the semen from the vas deferens flows backward into the bladder, resulting in urine mixed with sperm in the bladder, at this time, regardless of whether the patient in the ejaculation behavior before urination, the urine will be mixed with sperm, and urination will be sperm discharged. Common diseases that can cause retrograde ejaculation include diabetes mellitus, chronic inflammation of the bladder, urethra, seminal mound, etc., local neurological dysfunction caused by prostate, bladder, rectal surgery, etc., as well as certain medications can also cause. When there is a long-term situation of urinating and ejaculating spermatozoa, it is necessary to go to the hospital in time to see a doctor and get regular treatment in time.